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Mike M
02-17-2010, 10:51 PM
My car has 4:10s and I have the big Nittos out back. My speedo is off by about 5 mph. My Predator tuner allows me to change the parameter for the speedo but I am not sure of the proper value to plug in.

Anyone been down this road?
SC Cheesehead
02-18-2010, 05:28 AM
If the Predator is like the xCal, the speedometer parameter is revolutions per mile. You'll need to determine tire circumference and then divide that number into factored value (e.g. inches, feet, etc) for a mile and that should do it.
Zack
02-18-2010, 06:21 AM
Change the Revs/mile to 710 and go DOWN in 5mph incriments until its perfect.
RacerX
02-18-2010, 07:19 AM
Careful with your thread titles! CBT will be in here in a heartbeat! :D
SC Cheesehead
02-18-2010, 07:26 AM
Careful with your thread titles! CBT will be in here in a heartbeat! :D


:rofl: followed shortly by Phroggie and MM-Matt...:D
Haggis
02-18-2010, 07:44 AM
:rofl: followed shortly by Phroggie and MM-Matt...:D

That's what she said.
SC Cheesehead
02-18-2010, 07:47 AM
:rofl: followed shortly by Phroggie and MM-Matt...:D


That's what HE said.http://www.bloodydecks.com/forums/images/smilies/supergay.gif

Fixed it for you, bubba...:D